Local linux builds should not enable PGO by default

[sbomer]

With recent upgrades to compiler versions (and upcoming upgrade to clang 16) in our official builds, our profile data uses an increasingly recent version of the PGO data format, which requires a similarly recent version of the compiler in order to optimize using this data.

Local builds and the runtime-dev-innerloop build should not enable PGO optimization in order to avoid requiring the very latest clang.

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Issue Details

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With recent upgrades to compiler versions (and upcoming upgrade to clang 16) in our official builds, our profile data uses an increasingly recent version of the PGO data format, which requires a similarly recent version of the compiler in order to optimize using this data.

Local builds and the runtime-dev-innerloop build should not enable PGO optimization in order to avoid requiring the very latest clang.

Author:	sbomer
Assignees:	-
Labels:	area-Infrastructure-coreclr, untriaged
Milestone:	-

[BruceForstall]

This is specifically about non-Windows builds, right? Presumably local Windows Release builds could continue to consume PGO data without issue?